I try to find the boolean list for the first number in an strictly increasing integer list. eg.
1, ( >:@}: ~: }.) 4 5 6 7 8 11 12 16 17 19 21 1 0 0 0 0 1 0 1 0 1 1 but it does not handle the corner case where the list is empty 1, ( >:@}: ~: }.) 0$0 1 I want it to return an empty list instead. Any idea? -- regards, ==================================================== GPG key 1024D/4434BAB3 2008-08-24 gpg --keyserver subkeys.pgp.net --recv-keys 4434BAB3 唐詩133 劉長卿 秋日登吳公臺上寺遠眺 古臺搖落後 秋日望鄉心 野寺人來少 雲峰水隔深 夕陽依舊壘 寒磬滿空林 惆悵南朝事 長江獨至今 ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm